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#11338519 - 01/11/16 11:40 AM JACK PLATE ?
harvey walker Offline
Angler

Registered: 01/24/12
Posts: 336
Loc: waco
My boat lifts the front end up a lot when I try to get on plane, would it help to move the motor up or down? I have a 18'9" Javein with 175hp on a 10" jackplate. I can run in the lower 60 mph as it is now. I would not mine if I lose a little top end if I can get on plane faster. I do not run wide open very much. This is 1996 boat and motor. I change from a 4 bladed prop to a 5 It help the hole shot but had to run hight rpm to hit 45 to 50 mph.

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#11338668 - 01/11/16 12:34 PM Re: JACK PLATE ? [Re: harvey walker]
GROD Offline
Pro Angler

Registered: 09/12/10
Posts: 777
Loc: Eagle Mountain
Take to Steve's Props out near lake fork. Or pull up some of the old post
In reference to same question. Sure you can find his information on here. Does excellent work with props, jack plates, and getting things right for your boat to perform the way you want it to.

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#11338900 - 01/11/16 01:59 PM Re: JACK PLATE ? [Re: harvey walker]
B.Hollingshead Offline
Extreme Angler

Registered: 03/11/09
Posts: 1668
Loc: ft.worth
It sounds like it needs to go down, is your motor trimmed down when you take off. The only reason I ask is it will do that when you take off if the motor is not trimmed down. Level your boat on your driveway and level the motor and measure from the ground to the center of your prop shaft, and measure from the ground to the center of your running pad. Your prop shaft shouldnt be any lower then 2 1/2" below your center running pad. Work your way up from there in 1/2" incriments. This will help you get your hole shot corrected.
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Branden Hollingshead

29-DD's and counting

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#11338921 - 01/11/16 02:09 PM Re: JACK PLATE ? [Re: harvey walker]
Flippin-Out Offline
Extreme Angler

Registered: 02/25/15
Posts: 1564
Loc: Magnolia, TX
He hasn't said anything about what pitch or diameter prop he has. Given that he has a 5 blade prop I seriously doubt it's going to be a good match for that boat - regardless of pitch. He probably needs a 24 inch or so pitch 3 blade prop. The 5 blade props are for heavy boats generally. No bass boat fits that definition.

Harvey, whoever put you onto the 5 blade prop idea......probably should be ignored in the future with respect to boat performance. Find a boat dealer around you that handles your brand engine. Talk with them about setting you up with the right prop. Get them to agree to some trial runs (where you assume liability if damage occurs).

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#11339160 - 01/11/16 04:10 PM Re: JACK PLATE ? [Re: harvey walker]
harvey walker Offline
Angler

Registered: 01/24/12
Posts: 336
Loc: waco
I do trim it all the way down.
I will take B. Hollingshead advice and measure my prop shaft when it gets a little warmer.
I would to take it to Steve but I am in Waco.

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#11339730 - 01/11/16 07:55 PM Re: JACK PLATE ? [Re: harvey walker]
WmSmith Offline
Outdoorsman

Registered: 11/27/14
Posts: 124
You could always drop you jackplate a little bit but you also may want to adjust your tackle. Too many guys put too much tackle upfront and it's hard for the bow to plane

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#11340940 - 01/12/16 09:15 AM Re: JACK PLATE ? [Re: Flippin-Out]
teamchampion Offline
Outdoorsman

Registered: 12/28/15
Posts: 30
Loc: Central Texas
Second time today that Flippin-Out knew what he was talking about. Can't imagine someone recommending a 5 blade prop unless just wanted to sell prop. Did they also recommend a porpoise tail. Another bad idea by guys that do not know what they are doing. My dealer allowed me to take 3 props to the lake, a 23, 25, 27. I was able to run the props and judge performance, hole shot and rpms. However, would not recommend you attempt to change between props while in the water. That could get very expensive in a hurry. It is also not uncommon for guys to have jack plates or motors mounted to high. They think it looks cool.

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#11340991 - 01/12/16 09:32 AM Re: JACK PLATE ? [Re: WmSmith]
Flippin-Out Offline
Extreme Angler

Registered: 02/25/15
Posts: 1564
Loc: Magnolia, TX
Originally Posted By: WmSmith
You could always drop you jackplate a little bit but you also may want to adjust your tackle. Too many guys put too much tackle upfront and it's hard for the bow to plane


He indicated that the bow rises and won't push over the bow wave to truly get the hull on plane. For hole-shot, weight forward of the hull's CG (center of gravity) is GOOD. Where "too much weight in the bow" comes into play is inhibiting getting up on the pad and making good top speed. I don't know what his weight distribution is right now, but rarely is the bow of a bass boat too light, and a heavy bow would not generally cause what he describes.

I'm quite confident that in the end a 22-24 inch pitch high-rake stainless prop for a fast pad boat is what he will need. (I don't mean 80 by fast)..... fast starts in the 50s generally when the hull gets lifted up out of the water onto the pad. I'm betting that 5 blade is cavitating like a windmill, so he wallows with the bow in the air.


Edited by Flippin-Out (01/12/16 09:33 AM)

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#11341106 - 01/12/16 10:12 AM Re: JACK PLATE ? [Re: harvey walker]
Bass Buster1 Offline
Extreme Angler

Registered: 08/26/04
Posts: 1352
Loc: Denton
I have an 18'6" 93 Javelin with a Johnson 150. It has a 4 blade 24p prop and with the motor trimmed all the way down, I jump on plane out of the hole and at WOT, 5500 RPM and everything just right I run 62 mph gps. It runs and rides comfortable at 55 mph. I think the 5 blade is the problem. I worked with Steve as suggested above, he is good. You can call him and he will be able to suggest solutions over the phone with out having to drag your boat to him.
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#11341158 - 01/12/16 10:48 AM Re: JACK PLATE ? [Re: harvey walker]
Dubee Offline
Extreme Angler

Registered: 07/17/11
Posts: 1199
Loc: Godley Tx
A 5 blade is not a speed prop for sure but normally have great holeshot. Alot of people run them on bass boats on really big water beause they bite when runnung big waves.

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#11343816 - 01/13/16 01:55 PM Re: JACK PLATE ? [Re: harvey walker]
harvey walker Offline
Angler

Registered: 01/24/12
Posts: 336
Loc: waco
O K, I am running a 13/12 x 25 4 bladed prop, the center of my prop is 3" below my pad. The 5 bladed prop I tried did help the hole shot but I had no top end. I have a VRO fuel pump out right now and it"s going to be Feb before I can get a new one (life on SS). When I get it running again the first thing I will do is take all the tools I need to the lake and move it up and the run it. THANKS FOR THE HELP

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#11376181 - 01/28/16 08:53 AM Re: JACK PLATE ? [Re: harvey walker]
harvey walker Offline
Angler

Registered: 01/24/12
Posts: 336
Loc: waco
UPDATE:
O K new fuel pump is in and I did move my plate up 1/2 inch. went to the river yesterday and ran it. The hole shot is 100 times better than before. I did run it wide open for a short time and hit 55 before I slowed back down, that with a full tank of gas and all my stuff. I think I can get more top end. the hole shot is what I was after.

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#11383882 - 02/01/16 12:09 PM Re: JACK PLATE ? [Re: harvey walker]
steve@scp Offline
TFF Celebrity

Registered: 08/25/06
Posts: 6629
Loc: Quitman,Tx
Originally Posted By: harvey walker
My boat lifts the front end up a lot when I try to get on plane, would it help to move the motor up or down? I have a 18'9" Javein with 175hp on a 10" jackplate. I can run in the lower 60 mph as it is now. I would not mine if I lose a little top end if I can get on plane faster. I do not run wide open very much. This is 1996 boat and motor. I change from a 4 bladed prop to a 5 It help the hole shot but had to run hight rpm to hit 45 to 50 mph.


i have set up a ton of those boats.

a 10" plate is too much. 8" is all i ever put on them.
prop wise.. i assume that's a 175 fast strike.. and believe or not. a 24p Raker is THE PROP on that boat.
hole shot should be around 3 seconds when setup correctly. 3.25" below pad with raker. scrap the 4 and 5 blade prop idea.

if you need any help. my number 903-763-5225
steve
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www.hydrodynamics-usa.com
903-763-5225





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#11383950 - 02/01/16 12:37 PM Re: JACK PLATE ? [Re: harvey walker]
bassmasterffej Offline
Outdoorsman

Registered: 11/15/12
Posts: 76
Loc: Alabama
cheers
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